When Iron Man 2 premieres in May, prepare yourself for a post-mortem celebrity cameo. Adam Goldstein, a.k.a. DJ A.M., who passed away last August, filmed a scene for the movie, but after he died director Jon Favreau had to make a decision whether or not to keep his role in the movie. Favreau opted to leave it in, and to dedicate the film to the DJ.

Favreau explained “We tried to make it respectful and for people who know him, they’ll get a kick out of it and for people who don’t it will sort of slide by without much notice.” One of the film’s co-stars, Don Cheadle said “It was just really sad for everyone and it made it strange, too. It’ll be interesting to see it on the screen,” which is how we feel – sad and strange. It’s a nice gesture for sure, but might make for a jarring, possibly sad moment in an otherwise upbeat, action-filled movie. His is not the only celebrity cameo in the film, but it seems like it may be the one to distract us the most – until we’re further distracted byScarlett Johansson‘s Black Widow outfit, of course.

Jason Segel, who made a name for himself by starring on Judd Apatow‘s cult TV hit Freaks & Geeks, has the same laid-back, California vibe that he exudes in Forgetting Sarah Marshall. He also has a razor-sharp wit. Maybe this is why he seems like a natural fit to co-star as Paul Rudd‘s new Best Dude Forever in I Love You, Man — an exploration of male friendship that opens tomorrow (March 20). We spoke with Jason about the real-life nature of his man friends, whether he’s a “girlfriend guy” or a “guy’s guy” and what Hollywood hunk he’d most like to have a man date with. Answer: The First African-American President of the United States is more his type.

Jason Segel: I’d have to say Andy. Andy Samberg. He’s hilarious from the moment he arrives on set, which is 6 a.m., to the moment he leaves. But there was this one moment … Forgetting Sarah Marshall had just come out when they began filming I Love You, Man, and I was feeling a little down because Forbidden Kingdom had beat it by $1 million. A woman approached me on the way to set, and said: “I just need to tell you I saw the movie this weekend and I loved it.” When she walked away, Andy turned to me and said, “She thinks you’re Jet Li.”

Despite not having a role in I Love You, Man, Jack Blacknot-so-coyly graced the premiere’s red carpet last night with his wacky facial expressions and noticeably pained wife, Tanya Haden. More toned-down and dapper on the red carpet was the cast, including Jason Segel, Paul Rudd, Rashida Jones, and Andy Samberg. See pictures of them below, as well as Elizabeth Banks donning a doily, Audrina Patridge looking vacant but pretty, and Haden resisting the urge to slap her husband.